<html
 xmlns="http://www.w3.org/1999/xhtml"
 xmlns:xf="http://www.w3.org/2002/xforms"
 xmlns:ev="http://www.w3.org/2001/xml-events"
>
   <head>
      <title>Button Example</title>
      <xf:model/>
   </head>
   <body>
      <xf:trigger>
          <xf:label>Button</xf:label>
          <xf:hint>If you press this you will get a hello world message.</xf:hint>
          <xf:message level="modal" ev:event="DOMActivate">Hello World!</xf:message>
      </xf:trigger>
   </body>
</html>